package com.comtop.springboot.templet.common.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * Spring Context 工具类
 * 
 * @author wangjiafang
 * @version 1.0
 * @since 2016年11月29日 下午11:45:51
 */
@Component
public class SpringContextUtils implements ApplicationContextAware {
	public static ApplicationContext applicationContext; 

	@Override
	public void setApplicationContext(ApplicationContext applicationContext)
			throws BeansException {
		if(SpringContextUtils.applicationContext == null){
			SpringContextUtils.applicationContext  = applicationContext;
		}
	}

	/**获取applicationContext**/
	public static ApplicationContext getApplicationContext() {
		return applicationContext;
	}
	/**通过name获取 Bean**/
	public static Object getBean(String name) {
		return applicationContext.getBean(name);
	}
	/**通过name,以及Clazz返回指定的Bean**/
	public static <T> T getBean(String name, Class<T> requiredType) {
		return applicationContext.getBean(name, requiredType);
	}
	/**通过name,判断是否有这个Bean**/
	public static boolean containsBean(String name) {
		return applicationContext.containsBean(name);
	}
	/**通过name,判断这个bean 是否是单例**/
	public static boolean isSingleton(String name) {
		return applicationContext.isSingleton(name);
	}
	/**通过name,得到bean的类型**/
	public static Class<? extends Object> getType(String name) {
		return applicationContext.getType(name);
	}

}